Filter SNMP data

[Voxie]

Hi,

I have made a template for our bladecenter. (IBM Bladecenter H)

But some SNMP items are giving me values like :
- 40.00 Centrigrade
- 2920 Watts

Is it possible to convert it into numbers:
- 40.00
- 2920
(Filter the text)

I tried to find my answer on the wiki page but couldn't find a solution.


Thank you for your time.

[untergeek]

Is there a different OID which provides the same data?

I know in snmpget and snmpwalk you can specify to omit the units. I wonder if Zabbix could have that in place by default...

[pcamelio]

I have the same bladecenter as well a BCS.
Unfortunately, the SNMP MIB did not give other values.

One way to overcome the pb is to make a script on the zabbix server which using snmpwalk grab the value and correct it with sed/awk

the result can be send to an item value to with zabbix_sender.

[richlv]

snmpwalk prints units if they are specified by a known mib - zabbix always grabs the raw value. if the device is only providing result with additional strings attached, i'd probably report that as a bug against the vendor of that device

there should always be an oid that provides the numeric value without silly strings attached.

[untergeek]

This could be accomplished by using the -OU option on an snmpwalk:

-O OUTOPTS		Toggle various defaults controlling output display:
			  0:  print leading 0 for single-digit hex characters
			  a:  print all strings in ascii format
			  b:  do not break OID indexes down
			  e:  print enums numerically
			  E:  escape quotes in string indices
			  f:  print full OIDs on output
			  n:  print OIDs numerically
			  q:  quick print for easier parsing
			  Q:  quick print with equal-signs
			  s:  print only last symbolic element of OID
			  S:  print MIB module-id plus last element
			  t:  print timeticks unparsed as numeric integers
			  T:  print human-readable text along with hex strings
			  u:  print OIDs using UCD-style prefix suppression
			  U:  don't print units
			  v:  print values only (not OID = value)
			  x:  print all strings in hex format
			  X:  extended index format

See the "don't print units" bit there? If you still see units using the -OU, then it's a bug with the MIB/Provider.

[Voxie]

I have the same bladecenter as well a BCS.
Unfortunately, the SNMP MIB did not give other values.

One way to overcome the pb is to make a script on the zabbix server which using snmpwalk grab the value and correct it with sed/awk

the result can be send to an item value to with zabbix_sender.

Do you have made a script like that ?
Or are there similair examples availible ?

[Voxie]

Does somebody have an idea ?